Drain the channel only if it has pending events. This avoids trying to
read from an already-empty channel.
Close#3734
Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
Dealing is fast, we don't need 10 minutes to check that connection can
(or can't) be established. Improve documentation along the way.
Close#3721.
Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
Previously, the `blockQueuer` routine, which enqueues blocks into
`bQueue`, could be blocked on enqueing newer blocks if older blocks
downloading is delayed by NeoFS.
The `blocksCh` channel, acting as a queue ordered by download speed,
conflicted with the BQueue requirement for strict sequential enqueuing
(expecting an exact range of blocks), resulting in a deadlock that
stalled the process.
Before with default config settings:
```
2024-11-27T17:12:19.348+0300 INFO persisted to disk {"blocks":
0, "keys": 116, "headerHeight": 0, "blockHeight": 0, "took": "15
.509083ms"}
2024-11-27T17:19:39.574+0300 INFO persisted to disk {"blocks":
16, "keys": 11107, "headerHeight": 216768, "blockHeight": 216768,
"took": "62.762041ms"}
```
Average block persistence speed: 492.40 block/s
Average blocks number for each persist log: 584.28
After:
```
2024-11-27T17:29:03.362+0300 INFO persisted to disk {"blocks":
0, "keys": 116, "headerHeight": 0, "blockHeight": 0, "took": "19
.485084ms"}
2024-11-27T17:34:58.527+0300 INFO persisted to disk {"blocks":
16, "keys": 11109, "headerHeight": 216770, "blockHeight": 216769,
"took": "52.43925ms"}
```
Average block persistence speed: 610.33 block/s
Average blocks number for each persist log: 752.61
Close#3699
Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
